> This is strange indeed. I am wondering now if those artifacts are caused by
> radiosity... Have you had a mention of I-Stack Overflows reported in the
> statistics? Maybe max_intersections is too low?
>
> OTOH, it looks a bit like a max_gradient problem, but if no isorfaces are
> used here... Neither max_trace.... And without reflective surfaces
> max_trace_level seems out of the question too...
>
> Thomas

Hi Thomas,

Not sure about the max_intersections as the scene has not completed yet (it
crashed and now I have restarted it with lower quality radiosity settings but I
will look into this next).

However, I think I may have found the issue (although I am not sure yet and it
will require more test renders to check..) I inserted the basic radiosity
settings and re-rendered (wow! that was much quicker) the scene looks fine.
However, I noticed that the comment shows a value for nearest count of 1..10.
Now the documentation states that 20 is the highest possible value but on
Christoph's radiosity tutorial:

http://www.imagico.de/pov/radiosity01.html

He states 10 is the highest, obviously only one of these is correct and maybe
setting this too high is the cause.

I will do some tests to find out but am pretty sure I have used nearest_count=20
before without problems..

Sean

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